Installing Simatic Cfu Pa Bundle With Aluminum Enclosure On The Mounting Surface - Siemens Simatic CFU Commissioning Manual

Risk for intrinsic safety
When a connector is mixed up on the SIMATIC CFU PA (e.g. PROFINET cable is mixed up
with PA spur lines), or if the cable is connected incorrectly to the PA field devices, intrinsic
safety is at risk:
● Only connect Ex i circuits (intrinsically-safe PA field devices) to the spur lines!
● Check the wiring to the PA field devices.
Installing the enclosure
In order to operate the equipment, you must ensure that the assembly work is carried out
correctly.
You can find information on this in section "Installing the CFU (Page 32)".
● Before connecting them, the cables must be stripped over the entire length specified in the
manual.
● When fastening the screws and cable glands, observe the required tightening torques; see
section "Tools and tightening torques (Page 149)".
Additional information
● You can find information about the power supply in section "Connecting the power supply
to the CFU (Page 38)".
● You can find information about the ambient temperature in section "Mechanical and climatic
ambient conditions for operation (Page 134)".
● System manual Principles of Explosion Protection
cs/ww/en/view/12521844); section
11.3.2.4

Installing SIMATIC CFU PA bundle with aluminum enclosure on the mounting surface

Requirement
● The substrate must be level, with load-bearing capacity, and it must be vibration free.
● Select appropriate fixing accessories for the substrate.
Tools required
● 4 fixing screws M6; dowels depending on the mounting surface
● Screwdriver suitable for the screws used
● For enclosure screws: Screwdriver PH2 or with 9 mm blade width
SIMATIC CFU
Commissioning Manual, 07/2018, A5E39252870-AC
11.3 Configuration with SIMATIC CFU PA bundle with aluminum enclosure
WARNING
Compact Field Unit in the enclosure for use in a hazardous area
"Installation in hazardous areas"
(https://support.industry.siemens.com/
117